Three of the inmates have been sentenced and were waiting to be taken into custody by the state Corrections Department. The fourth also had been sentenced but was awaiting trial on another charge.

Anadarko police were called about 2:40 a.m. Sunday about four men being seen outside the jail in orange jumpsuits. Jail officials conducted a head count and found that four inmates were missing, Cain said.

It appears the men opened a trap door above the jail showers and crawled to the pipe chase door which leads to outside the jail, Cain said.